Crow Tech

Free utility

MAC Address Formatter

Validate EUI-48/EUI-64 hexadecimal layout and switch separators.

All free utilities

Processing stays on this device. Your input is not uploaded, sent to an external service, or saved by Crow Tech.

Workbench

Inputs stay on this page. Use the explicit action to validate and produce a result.

Validates address text layout and reports the two first-octet flags only; it performs no vendor or network lookup.